Improvement in machines for making rivets



. 3Sheets-Sheet 1.

B. c.. QUINBY. MACHINES FOR MAKING RIVETS.

N 170,'11Z Patentd 11'o'v.16,1875.

NPETERS. FHOTO-LITHOGRAPHER, WASHINGTON, D C.

3 Sheets-Sheet 2. B. c. QUINBY MACHINES FOR MAKING RIVE'IS. 1 1 No.170,112. Patented Nov. 16,1875.

NPEI'ERS PHOTO-UTHOGRAPHER, WASHINGTON, u C,

3 Sheets-Sheet 3.

Patented Nov.16,1875.

B. c. QUINBY. V MACHINES FOR MAKING RIVETS.

F Mi

strips of metal under the cutting-jaws.

UivrTED STATES PATENT OFFICE. I

BYRON G. QUINBY, OF PLYMOUTH, MASSACHUSETTS.

IMPRC DVE MENT IN MACHINES FOR MAKING RIVETS.

Specification forming part of Letters Patent No. 170, 1 12, dated November 16, 1875; application filed -July 1, 1875.

Y drawmgs.

The object of my invention is to rapidly form rivets, or similar articles, from blanks or strips of metal by combining in an otherwise ordinary nail-outting machine a pair of grooved griping-dies equal in breadth to the length of the blank, less that portion required to form the head, as will be hereinafter mentioned, and described and shown in the drawings.

A and B are cutting-jaws, secured on the I rocking levers A B, which hold cutters G and D. These rocking levers are brought back to thisnormal position by the springs or b. E is a bed-cutter; and F is a gage, which regulates the distance in feeding the G is a spindle or shaft with cams. H is a springlever, operated by the pivoted lever 71., which is actuated by the cam h, which presses the blank of metal against the face of the cutter D. I and J are griping-dies with grooves, whereby the blank is swaged into oylindricalform, the griping-die I being operated by the rocking lever K, which is actuated by a cam on the shaft G. L is a punch, which is held in the groove of the stationary gripingdie J, passing through a suitable guide, j, and is operated by a pivoted lever, d. N is a header, secured in block 0, which is operated by the toggle-levers P, and drawn back again by spring 19 and rocking lever P, connected by connecting-rods p with the crank Q upon the shaft G. Letter 0 is a guide, against which the plates are placed before they are cut.

Having thus named the principal parts of my'machine, I will now explain its mode of operation.

Sheet metal, having been cut into strips, in

or shaft G, and the die J is secured under bed-cutter E, and remains at rest. While the die I is working and pressing or swaging the blank into a cylindrical form, the punch L, held in the groove of stationary griping-die'J, which is operated by lever d from the cam e .on shaft G, is pressed against the end. of the blank, and regulates the length-of the portion swaged. That part of the blanks held by the cutter D and spring-lever H is not swaged by dies I and J, but is struck by the header N, which is secured in block 0, and is worked by toggle-joint levers P from spindle G, the v cutter D and spring-lever H moving out of the way. This forms the head of the rivet, after which the griping-die I moves backward, and working forward, and at the same time punch L forces the rivet just made from between the dies.

The foregoing is sufficient to enable any person skilled in the art to easily understand the construction and mode of operation of my machine. I

I claim as my invention- In combination with the cutters, headingtool, gage, punch, and spring-lever of a nailcutting machine, constructed and operating substantially as described, the griping and swaging dies I J, each of breadth equal to the length of the blank severed by the cutters, minus that portion required to be upset to form the head, and each provided with a semicylindrical groove in its edge extending over its entire breadth, in virtue of which the dies, in compressing the blank, shallswage the same to a cylindrical form, as set forth.

. B. o. QUINBY. 

